Pure Encapsulations PureGenomics® B-Complex

Here's something most athletes never think to check: your B vitamin supplements. They may not actually work for your genetics. Up to 40% of people carry a variation in the MTHFR gene — a genetic quirk that makes it difficult or impossible to convert standard folic acid into the form your body can actually use. If you're one of them, and most don't even know it, a generic supplement like a B vitamin may be doing nothing.

PureGenomics® B-Complex is the activated B vitamin formula designed to work regardless of your genetic starting point.

Activated Forms That Bypass Genetic Barriers — Standard B vitamins need to be converted before your body can use them, and common MTHFR gene variations interfere with that conversion. PureGenomics B-Complex delivers folate as Metafolin® L-5-MTHF — the biologically active form your body can use immediately, no conversion required.

A Smarter B12 Blend — Most formulas use a single form of B12. This one uses two: adenosylcobalamin, which is stored directly in the mitochondria to drive cellular energy production, and hydroxycobalamin, a precursor your body converts into both active forms it needs. You get coverage across your entire B12 metabolic pathway.

Methylation Support Built for Performance — Methylation is the cellular process that regulates energy metabolism, DNA synthesis, neurotransmitter production, and hormone balance. Endurance athletes running high training loads depend on robust methylation — and deficiency in key B vitamins is one of the fastest ways to compromise it.

The full spectrum formula includes thiamin (B1) for carbohydrate metabolism, benfotiamine for enhanced B1 uptake and retention, riboflavin 5'-phosphate (activated B2), pyridoxal-5'-phosphate (activated B6), niacin, biotin, pantothenic acid (B5), choline, and inositol — all in a single daily capsule. B vitamins are water-soluble, so your body doesn't store them. Athletes burning through high-output training days need a reliable daily source.

How to Use PureGenomics® B-Complex

Daily Dose: Take 1 capsule with breakfast or your first meal. Morning dosing aligns with peak energy metabolism demands and prevents the rare sleep disruption that can occur with evening B vitamin intake.

Consistency Over Time: B vitamins work cumulatively — the biggest benefits (sustained energy, sharper mood, better recovery) typically become noticeable after 2–4 weeks of daily use.

Pro Tip: Pair with your morning meal containing healthy fats to support fat-soluble cofactor absorption and optimize uptake of the full formula.

Endurance athletes, plant-based athletes, and anyone with known MTHFR gene variations are among the populations most likely to benefit from activated-form B vitamin supplementation — deficiency in this group is common, and the performance consequences compound over time.